Car-coupling knuckle.



No. 838,325. PATBNTED DEC. 11, 1906. N. F. HARRIMAN & E. B. DAILBY.

GAR COUPLING KNUCKLE. APPLICATION FILED mum, 1906.

run: NORRIS PETERS co., WASHINGTON. D. c.

UNITED STATES PATENT OFFICE.

NORMAN F. HARRIMAN AND EDMUND B. DAILEY, OF OMAHA, NEBRASKA.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed July 18,1906; Serial No. 326,723.

To all whom, it may concern.-

Be it known that we, NORMAN F. HARRI- MAN and EDMUND B. DAILEY, citizensof the United States, residing at Omaha, in the county of Douglas andState of Nebraska, have invented a new and useful Improvement inCar-Coupler Knuckles, of which the following is a specification.

Our invention relates to a wearing-strip applied to the engaging orbearing face of an automatic car-coupler knuckle, and has for its objectto provide a hard metallic wearing-strip which can be readily insertedand firmly held in the said face and removed therefrom when worn withoutinjury to the knuckle.

The invention consists in features of novelty, as hereinafter describedand claimed, reference being had to the accompanying drawings, formingpart of this specification, whereon Figure 1 is a top plan view of thedrawheads and interlocking knuckles of an automatic car-coupler havingour improved wearing-strip applied to the engaging faces, respectively,of the knuckles; Fig. 2, a similar view to Fig. 1 of one of the knucklesseen therein detached, omitting the wearing strip; Fig. 3, a verticaltransverse section through the knuckle on line 3 3 in Fig. 2, showingits engaging face in front elevation, omitting the wearing-strip; Fig.4, a similar view of the knuckle to Fig. 2, showing the wearing-strip inplace; and Fig. 5, a front view of the wearing-strip preparatory to itsbeing inserted and secured to the said face.

Like letters and numerals of reference denote like parts in all thefigures.

(1/ represents the draw-heads, and b the interlocking knuckles, of anautomatic carcoupler having its operatingparts constructed and arrangedin the usual well-known manner. In the engaging or bearing face of eachknuckle b is formed between the top and bottom surfaces of the knuckle ba recess 1 having its sides 2 for aportion of its length channeled,preferably dovetailed, With rounded corners at their junction with theinner face of the recess 1, as shown, or otherwise suitably shaped, thedovetailed channeled portions 2 of the recess 1 being open at the top ofthe knuckle b and closed at their inner ends 3, respectively, near thebottom of the knuckle b, where the metal is formed with a beveled orother suitably-shaped depression 4, which opens,

preferably, from the side of the recess 1 for the purpose hereinafterstated.

Within the recess 1 is inserted, preferably from above, a wearing-stripc, of hard steel or other suitable material, having its side edges for aportion of its length beveled and adapted to fit closely within thedovetailed (or other shaped) side channels 2 of the recess 1, while theremaining portions 5 of its side edges are preferably straight andadapted to fit closely between the corresponding straight side portions5 of the recess 1, the bottom ends 3 of the beveled edge portions of thewearing-strip 0 bearing upon the closed ends 3 of the dovetailedportions 2 of the recess 1, in which position the top and bottom ends ofthe Wearing-strip c are flush with the top and bottom surfaces,respectively, of the knuckle 1), except that the aforesaid straight sideedge portions 5 of the wearingstrip c are extended downward below thebottom of the knuckle b, as seen particularly in Fig. 5, so that whenthe strip 0 is inserted from above and forced home within the recess 1these extended portions 5 of the side edges are forced outward intoclose engagement with the depressions 4, before mentioned, in the bottomof the knuckle b, as indicated by the dotted lines, and thereby firmlysecure the wearing strip 0 to the knuckle I).

The outer or engaging face of the wearingstrip 0 corresponds in contourto the normal face of the knuckle and may extend for any suitable widthacross the same, while the inner face of the wearing-strip c, which isadapted to bear closely against the corresponding face of the recess 1,may be of any suitable contour therewith.

It is here noted that the above-described arrangement of the parts maybe reversedthat is to say, the wearing-strip 0 maybe inserted from belowand secured or clenched to the knuckle b at the top.

If desired, the wearing-strip c and recess 1 may be tapered and thesides of the recess channeled throughout instead of part Way, in whichcase the depressions for receiving the extended side edge portions ofthe wearingstrip 0 are formed in the horizontal surface of the knuckleadjacent to the small end of the recess 1.

By our invention casting-holes through the wearing-strip for holding itin place are dispensed with, and its strength, durability, and

bearing-surface thereby increased; also, as the means for securing thewearing-strip c are integral therewith it can be removed and renewedwithout injury to the knuckle.

We do not limit ourselves to the particular shape described of thechanneled side portions 2of the recess 1 for enga ing'and holding thecorresponding edges of the wearingstrip 0, as the same result may beobtained by making these portions of the recess 1 concave, square, orotherwise. Neither do we claim, broadly, the application of awearingstrip to the bearing-face of a car-coupler knuckle, as suchdevice has been heretofore used; but

What we do claim as our invention, and desire to secure by LettersPatent, is

1. The combination with a car-coupler knuckle, of a wearing-strip havingmeans integral therewith, but adapted to removably clench the said stripto the knuckle rivetwise, substantially as described.

2. The combination with a car-coupler knuckle having an upright facialrecess channeled part way along its sides from one end of the knuckles,and a depression opening from the recess at the other end of theknuckle, of a removable metallic wearing-strip corresponding to therecess, and adapted to be inserted therein, the said strip when in placebearing on the inner ends of the said channeled portions of the recessand adapted at one end to be clenched in the said depression,substantially as described and for the purpose set forth.

' 3. The combination with a car-coupler knuckle having an upright facialrecess channeled part way along its sides from the top of the knuckle,and a bottom depression opening from the recess, of a removable metallicwearing-strip corresponding to the recess, and adapted to be insertedtherein from above, the said strip when in place bearing on the innerends of the said channeled portions of the recess, and adapted at thebottom to be clenched in the said depression, substantially as describedand for the purpose set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

NORMAN F. HARRIMAN. EDMUND B. DAILEY.

Witnesses:

M. EVERETT DICK, THOMAS O. STARR.

